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| Ponceau S carries a negative charge and can combine with positively charged amino acid residues. At the same time, Lichun red can also combine with the non-polar regions of proteins, thus forming red bands. The staining of proteins by Lichun red is reversible. After staining, it can be washed off with distilled water, PBS or other appropriate solutions | |||||||||
6226-79-5
bosschemical
6226-79-5
| Ponceau S Basic information | |
| Product Name: | Ponceau S |
| CAS: | 6226-79-5 |
| MF: | C22H17N4NaO13S4 |
| MW: | 696.62 |
| EINECS: | 228-319-2 |
| Product Categories: | P;Stains and Dyes;Organics;Stains&Dyes, A to |
| Mol File: | 6226-79-5.mol |
| Ponceau S Chemical Properties | |
| bulk density | 660kg/m3 |
| density | 1.01 g/mL at 20 °C |
| refractive index | n20/D 1.338 |
| storage temp. | Store at RT. |
| solubility | H2O: soluble1mg/mL |
| form | Powder/Solid |
| Colour Index | 27195 |
| color | Red-brown |
| PH | 9.0 (10g/l, H2O, 20℃) |
| Water Solubility | 10 g/L |
| ε(extinction coefficient) | ≥330000 at 518-522nm in deionized water at 0.015g/L |
| λmax | 352 nm |
| 520 nm (2nd) | |
| Stability: | Stable. Incompatible with strong oxidizing agents. |
| CAS DataBase Reference | 6226-79-5(CAS DataBase Reference) |
| EPA Substance Registry System | 2,7-Naphthalenedisulfonic acid, 3-hydroxy-4-[[2-sulfo-4-[(4-sulfophenyl)azo]phenyl]azo]-, tetrasodium salt (6226-79-5) |
